Home / 81,453.30-122,289.30-52,001.70

Finding the Fourth Proportional to 81,453.30, 122,289.30 and 52,001.70

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Solution

The fourth proportional to 81,453.30, 122,289.30 and 52,001.70 is: 78,072.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.30 : 122,289.30 = 52,001.70 : x
  2. Step 2: Convert to fraction form
    81,453.30/122,289.30 = 52,001.70/x
  3. Step 3: Cross multiply
    81,453.30x = 122,289.30 × 52,001.70
  4. Step 4: Simplify right side
    81,453.30x = 6,359,251,491.81
  5. Step 5: Solve for x
    x = 6,359,251,491.81/81,453.30
  6. Step 6: Final answer
    x = 78,072.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.